CDC Electrical Systems Practice Test
Questions (5 Level)
Carbon monoxide and/or hydrogen sulfide create a severe danger in enclosed areas because they?
a.Can cause respiratory paralysis within seconds
b.Are combustible gases that can explode when ignited
c.Can cause more stress to cable
d.Emit more heat than other sections of the circuit - Correct Answer A
During startup operations, what is the purpose for engaging the loads slowly?
a.
Allows the generator time to regulate the power
b.
Allows a 60 second cool down time between cranking intervals
c.
May prevent downtime due to major failures
d.
Prevents condensation from building up in the fuel tank - Correct Answer A
How would one determine the number of light fixtures on the threshold?
a.Divide the length of the MOS by 10, and add one
b.Divide the length of the MOS by 100, and add one
c.Divide the width of the MOS by 10, and add one
d.Divide the width of the MOS by 100, and add one - Correct Answer C
How would the voltage be divided among resistors, if a 120VDC circuit has 2 resistors in series, each with 20 ohms of
resistance?
a.30 volts would be divide among the resistors
b.60 volts would be divide among the resistors
c.50 volts would be divide among the resistors
d.20 volts would be divide among the resistors - Correct Answer B
How would the voltage be divided among resistors, if a 120VDC circuit has 2 resistors in series, each with 20 ohms of
resistance?
a.60 volts would be divide among the resistors
b.30 volts would be divide among the resistors
c.20 volts would be divide among the resistors
d.50 volts would be divide among the resistors - Correct Answer A
If a Delta-Delta transformer connection is used for power and lights, then ____________?
a.
the primary midtap of one transformer is grounded and connected to a fourth wire of the 3-phase secondary system
b.
the secondary midtap of one transformer is grounded and connected to a fourth wire of the 3-phase secondary
system
c.
the secondary midtap of three transformers are grounded and connected to a fourth wire of the 3-phase secondary
system
d.
,the primary midtap of two transformers are grounded - Correct Answer B
If a Wye-Wye connection is used for lighting and power, then ____________?
a.
primary ground must be available and tied solidly (bonded) with the secondary neutral
b.
primary neutral must be tied solidly (bonded) with the secondary neutral
c.
primary neutral must not be bonded with the secondary neutral
d.
primary neutral must not be bonded with the secondary ground - Correct Answer B
If an electrician installed 120v system into a European system, what would happen?
a.Would have no affect
b.Would run slow or not at all
c.Would work in some European countries but not all
d.It could cause a fire and damage equipment - Correct Answer D
If an employee finds damaged equipment, they should?
a.Identify, tag, remove, and dispose of the equipment
b.Replace the damaged equipment
c.Identify and remove equipment and notify program manager and Foreman/NCOIC of faulty equipment
d.Notify Program manager and Forman/NCOIC of Faulty equipment - Correct Answer C
If testing for voltage on a 36 kV circuit using a high voltage phase tester, what would be required in order to obtain
results safely?
a.Only use the high voltage phase tester with a grip-all hot stick
b.Attach two pairs of extension resistors
c.Attach one pair of extension resistors
d.The basic unit is capable of reading 36kV - Correct Answer C
If the coils or windings are wound on iron cores, then ____________?
a.
magnetic field of the primary is reduced due the iron core's resistance
b.
nearly all the magnetic field of the primary flows through to iron core
c.
magnetic field is blocked by the resistance of air and the iron core
d.
all the magnetic field of the primary flows through to iron core - Correct Answer B
If the condition of the FACP displays a supervisory indicator, then?
a.The system will indicate that there is an issue with the systems that will not prevent proper function
b.The system will indicate that there is an issue with the systems that could prevent proper function
c.The system will still report a fire alarm but future repairs are required
d.The system has detected an activation of an initiating device indicating a presence of an emergency - Correct
Answer B
If voltage is generated by a chemical reaction inside a battery, what type of current is produced?
a.Alternating current
b.Semi-direct current
c.Semi-alternating current
d.Direct current - Correct Answer D
Once the BEAR base is fully operational, what action can be considered by the electrical shop personnel?
, a.Connect BEAR kitchen to the base electrical distribution systems
b.Install additional dedicated 150 KVA SDC
c.Increase power supply to one 100 kW generator and one 60 kW generator
d.Connect BEAR kitchen to a primary distribution panel - Correct Answer A
The MAAS body frame ___________ and transmits loads to ground.
a.Provides a mechanical link to the hydraulic cylinders
b.Provides support to the tape guide system
c.Provides structural support for the axel assemblies
d.Provides a means to tow the MAAS - Correct Answer B
What allows the use of wide bodied aircraft on runways with a MAAS installed?
a.Putting up polyurethane wing deflectors
b.Setback kits and addition equipment
c.All of these
d.Installing the MAAS further off the runway - Correct Answer B
What are three main issues that negatively affect the quality of light?
a.Brightness, uniformity of illuminance, and CRI
b.Brightness, glare, and CRL
c.Brightness, glare, and CRLGlare, uniformity of illuminance, and CRI
d.Glare, brightness, and CRI - Correct Answer B
What can happen if a toxic environment is not removed from a confined space before or during work?
a.Toxic environments have little to no effect on the attendant
b.Toxic atmosphere may cause impairment of judgement, unconsciousness and death to the entrant
c.Toxic atmosphere may cause impairment of judgement, unconsciousness and death to the attendant
d.Toxic atmosphere may cause a variety of symptoms but nothing serious - Correct Answer B
What degree must be maintained when installing the earth anchor stakes for a unidirectional installation?
a.20
b.15
c.10
d.12 - Correct Answer B
What does increasing the use of solid-state switching devices contribute to current waveforms?
a.A regulated voltage waveform also known as a uni-sinusoidal waveform
b.A distorted voltage waveform also known as a bi-sinusoidal waveform
c.A distorted voltage waveform also known as a non-sinusoidal waveform
d.A regulated voltage waveform also known as a non-sinusoidal waveform - Correct Answer C
What happens to the voltage in a parallel circuit?
a.In a series-parallel circuit, the voltage across each of the components is the same
b.In a parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
c.In a series circuit, the voltage across each of the components is the same
d.In a parallel circuit, the voltage across each of the components is the same - Correct Answer D
What happens to voltage in a series circuit?
a.In a series circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
b.In a parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
c.In a series-parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source
voltage
d.In a series circuit, the sum of the current consumed by each individual resistance is equa - Correct Answer A
Questions (5 Level)
Carbon monoxide and/or hydrogen sulfide create a severe danger in enclosed areas because they?
a.Can cause respiratory paralysis within seconds
b.Are combustible gases that can explode when ignited
c.Can cause more stress to cable
d.Emit more heat than other sections of the circuit - Correct Answer A
During startup operations, what is the purpose for engaging the loads slowly?
a.
Allows the generator time to regulate the power
b.
Allows a 60 second cool down time between cranking intervals
c.
May prevent downtime due to major failures
d.
Prevents condensation from building up in the fuel tank - Correct Answer A
How would one determine the number of light fixtures on the threshold?
a.Divide the length of the MOS by 10, and add one
b.Divide the length of the MOS by 100, and add one
c.Divide the width of the MOS by 10, and add one
d.Divide the width of the MOS by 100, and add one - Correct Answer C
How would the voltage be divided among resistors, if a 120VDC circuit has 2 resistors in series, each with 20 ohms of
resistance?
a.30 volts would be divide among the resistors
b.60 volts would be divide among the resistors
c.50 volts would be divide among the resistors
d.20 volts would be divide among the resistors - Correct Answer B
How would the voltage be divided among resistors, if a 120VDC circuit has 2 resistors in series, each with 20 ohms of
resistance?
a.60 volts would be divide among the resistors
b.30 volts would be divide among the resistors
c.20 volts would be divide among the resistors
d.50 volts would be divide among the resistors - Correct Answer A
If a Delta-Delta transformer connection is used for power and lights, then ____________?
a.
the primary midtap of one transformer is grounded and connected to a fourth wire of the 3-phase secondary system
b.
the secondary midtap of one transformer is grounded and connected to a fourth wire of the 3-phase secondary
system
c.
the secondary midtap of three transformers are grounded and connected to a fourth wire of the 3-phase secondary
system
d.
,the primary midtap of two transformers are grounded - Correct Answer B
If a Wye-Wye connection is used for lighting and power, then ____________?
a.
primary ground must be available and tied solidly (bonded) with the secondary neutral
b.
primary neutral must be tied solidly (bonded) with the secondary neutral
c.
primary neutral must not be bonded with the secondary neutral
d.
primary neutral must not be bonded with the secondary ground - Correct Answer B
If an electrician installed 120v system into a European system, what would happen?
a.Would have no affect
b.Would run slow or not at all
c.Would work in some European countries but not all
d.It could cause a fire and damage equipment - Correct Answer D
If an employee finds damaged equipment, they should?
a.Identify, tag, remove, and dispose of the equipment
b.Replace the damaged equipment
c.Identify and remove equipment and notify program manager and Foreman/NCOIC of faulty equipment
d.Notify Program manager and Forman/NCOIC of Faulty equipment - Correct Answer C
If testing for voltage on a 36 kV circuit using a high voltage phase tester, what would be required in order to obtain
results safely?
a.Only use the high voltage phase tester with a grip-all hot stick
b.Attach two pairs of extension resistors
c.Attach one pair of extension resistors
d.The basic unit is capable of reading 36kV - Correct Answer C
If the coils or windings are wound on iron cores, then ____________?
a.
magnetic field of the primary is reduced due the iron core's resistance
b.
nearly all the magnetic field of the primary flows through to iron core
c.
magnetic field is blocked by the resistance of air and the iron core
d.
all the magnetic field of the primary flows through to iron core - Correct Answer B
If the condition of the FACP displays a supervisory indicator, then?
a.The system will indicate that there is an issue with the systems that will not prevent proper function
b.The system will indicate that there is an issue with the systems that could prevent proper function
c.The system will still report a fire alarm but future repairs are required
d.The system has detected an activation of an initiating device indicating a presence of an emergency - Correct
Answer B
If voltage is generated by a chemical reaction inside a battery, what type of current is produced?
a.Alternating current
b.Semi-direct current
c.Semi-alternating current
d.Direct current - Correct Answer D
Once the BEAR base is fully operational, what action can be considered by the electrical shop personnel?
, a.Connect BEAR kitchen to the base electrical distribution systems
b.Install additional dedicated 150 KVA SDC
c.Increase power supply to one 100 kW generator and one 60 kW generator
d.Connect BEAR kitchen to a primary distribution panel - Correct Answer A
The MAAS body frame ___________ and transmits loads to ground.
a.Provides a mechanical link to the hydraulic cylinders
b.Provides support to the tape guide system
c.Provides structural support for the axel assemblies
d.Provides a means to tow the MAAS - Correct Answer B
What allows the use of wide bodied aircraft on runways with a MAAS installed?
a.Putting up polyurethane wing deflectors
b.Setback kits and addition equipment
c.All of these
d.Installing the MAAS further off the runway - Correct Answer B
What are three main issues that negatively affect the quality of light?
a.Brightness, uniformity of illuminance, and CRI
b.Brightness, glare, and CRL
c.Brightness, glare, and CRLGlare, uniformity of illuminance, and CRI
d.Glare, brightness, and CRI - Correct Answer B
What can happen if a toxic environment is not removed from a confined space before or during work?
a.Toxic environments have little to no effect on the attendant
b.Toxic atmosphere may cause impairment of judgement, unconsciousness and death to the entrant
c.Toxic atmosphere may cause impairment of judgement, unconsciousness and death to the attendant
d.Toxic atmosphere may cause a variety of symptoms but nothing serious - Correct Answer B
What degree must be maintained when installing the earth anchor stakes for a unidirectional installation?
a.20
b.15
c.10
d.12 - Correct Answer B
What does increasing the use of solid-state switching devices contribute to current waveforms?
a.A regulated voltage waveform also known as a uni-sinusoidal waveform
b.A distorted voltage waveform also known as a bi-sinusoidal waveform
c.A distorted voltage waveform also known as a non-sinusoidal waveform
d.A regulated voltage waveform also known as a non-sinusoidal waveform - Correct Answer C
What happens to the voltage in a parallel circuit?
a.In a series-parallel circuit, the voltage across each of the components is the same
b.In a parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
c.In a series circuit, the voltage across each of the components is the same
d.In a parallel circuit, the voltage across each of the components is the same - Correct Answer D
What happens to voltage in a series circuit?
a.In a series circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
b.In a parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage
c.In a series-parallel circuit, the sum of the voltages consumed by each individual resistance is equal to the source
voltage
d.In a series circuit, the sum of the current consumed by each individual resistance is equa - Correct Answer A
